21871528

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{16981}}^1$

素因数の和:17017

約数の個数: 32

約数和(自身を含む): 48908160

約数和(自身を除く): 27036632

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 184, 322, 644, 1288, 16981, 33962, 67924, 118867, 135848, 237734, 390563, 475468, 781126, 950936, 1562252, 2733941, 3124504, 5467882, 10935764, 21871528]

約数ペア:

[(1, 21871528), (2, 10935764), (4, 5467882), (7, 3124504), (8, 2733941), (14, 1562252), (23, 950936), (28, 781126), (46, 475468), (56, 390563), (92, 237734), (161, 135848), (184, 118867), (322, 67924), (644, 33962), (1288, 16981)]